Instrumentation for measurements of free-space sound pressures in the immediate vicinity of a propeller in flight

Author:	Mace, William D
Additional Authors:	Haney, Francis J
Year:	1956
Document Type:	N/A
Series:	NACA Technical Notes
Report Number:	NACA-TN-3534
Link:	https://digital.library.unt.edu/ark:/67531/metadc57697/